Two-Piece Case

1989 GMC Magnavan 5.7 K, 3L80/M40SECTION Two-Piece Case

Eaton two-piece locking differential is a 3-pinion type with clutch disc packs behind both side gears. The unit also utilizes a speed-sensitive device which automatically locks both rear wheels if either wheel should spin excessively during slow vehicle operation.

NOTE: Some components may not be used with all ring gears.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.